Finding the Fourth Proportional to 105,722.76, 145,892.34 and 57,967.24

Step by Step Solution

1. Step 1: Write the proportion equation
   105,722.76 : 145,892.34 = 57,967.24 : x
2. Step 2: Convert to fraction form
   105,722.76/145,892.34 = 57,967.24/x
3. Step 3: Cross multiply
   105,722.76x = 145,892.34 × 57,967.24
4. Step 4: Simplify right side
   105,722.76x = 8,456,976,286.94
5. Step 5: Solve for x
   x = 8,456,976,286.94/105,722.76
6. Step 6: Final answer
   x = 79,992.01